LEBENSOHL CONVENTION.doc - LEBENSOHL CONVENTION A great contribution towards better competitive bidding was originated by an old article published in

LEBENSOHL CONVENTION.doc - LEBENSOHL CONVENTION A great...

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LEBENSOHL CONVENTION A great contribution towards better competitive bidding was originated by an old article, published in Bridge World magazine, whose author’s misspelled name became the denomination of this conventionwn, the "2NT Lebensohl" or just LEB like most player like to say. The 2NT Leb in competition is not used to show a balanced hand or a stopper in the opponent's suit, but it is a artificial bid just to make partner to bid 3 Clubs, like a transfer, in order to establish a important means of communication to better understand partner's hand, or to find a more accurate contract. Leb makes it possible to distinguish between: a) an invitation hand; b) a sign-off hand; c) a game forcing hand. More than that, Leb also permits, in uncontested bidding, you and your partner to take real control in a reverse hand ranging 16-20 hcp, with 5-4-x- x distribution, and to know if the opener are in the lower range of 16-17 hcp or in the higher range of 19-20 hcp with 5-4-3-1 or 5-4-2-2. To learn the 3 principal applications and rules of this convention follow a detailed description of its use in each case: Case 1) Lebensohl when an opponent intervenes after our partner opens 1NT. Case 2) Lebensohl when an opponent opena a weak 2 suit and our partner says double. Case 3) Lebensohl after your partner makes a reverse at 2-level showing (5-4- x-x) distribution with 16-20 hcp range. 1) LEBENSOHL IN DEFENSE AGAINST OPPONENT INTERVENTION AFTER PARTNER OPENS A 15-17 hcp 1NT (can be use for weak NT with some adjustments) When partner open 1NT and an opponent overcalls at 2-level (2 / 2 / 2 / 2 ), the Stayman convention and transfer convention are off. In the particular case, when intervention of 2 Clubs shows an artificial suit like in CAPP, double by responder ignores the overcall and is the normal Stayman changing 2 for double to ask for a major suit (you can also agree with your partner too accept transfer in this case). Rule01: All responder 3-level bids are sign-off, but if opener has 4 cards support, he must raise to level 3 in that suit. Some partnerships accept raise only in maximum (17 hcp). Opener Opponent Responder 1NT 2 (2 or 2 ou 2 ) <= "sign-off" 1NT 2 (2 ou 2 ) <= "sign-off" 1NT 2 2 <= "sign-off"
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Rule02: All double are penalty for that suit, except in the case of artificial 2 . Rule03: A response of 2NT is undetermined and opener must bid 3 or pass if the other opponent bids anything at level 3. After opener bids 3 , the second possible bids of the responder are: a) responder passes if he has long suit in clubs and weak hand (< 8 hcp) Opener Opponent Responder Opponent 1NT 2 * 2NT** pass *Capp (majors) 3 pass pass pass ** transfer to 3 the responder hand can be: 63 95 Q83 K98765 b) responder, after had bid 2NT, bid another suit at 3-level, which has a lower rank than opponent's suit, to show a sign-off at 3-level.
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  • Spring '14
  • MuirD.Eaton

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